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Finding the Fourth Proportional to 628.47, 942.62 and 166.28

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Solution

The fourth proportional to 628.47, 942.62 and 166.28 is: 249.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.47 : 942.62 = 166.28 : x
  2. Step 2: Convert to fraction form
    628.47/942.62 = 166.28/x
  3. Step 3: Cross multiply
    628.47x = 942.62 × 166.28
  4. Step 4: Simplify right side
    628.47x = 156,733.31
  5. Step 5: Solve for x
    x = 156,733.31/628.47
  6. Step 6: Final answer
    x = 249.39

Related Problems

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.